Driving-gear.



No. 761,494. l y GDIFI DRIVING GEAR.

APPLIUATION FILED SEPT. ze, 190s. No MODEL.

Eg -L DWD/155555- i JNL/NTOR Bv y M l Y HTTORNEY PATBNTED MAY 31, v1904.

UNITED rSTATES Patented yMay 31, 1904,

PATENT t OFFICE.

' oi-IAELEs E. .IAEHN, 0E sT; Louis, MISSOURI.'

DRIVING-GEAR..

sPEGIEIcATIoN farming part of 'Letters Patent No. 761,494, dated May 3i, 1904.

` `Application filed September 26', 1903. Serial Nn.`1'74,800. (No model.)

To air/Z whom it moti/concern: p

Be it known thatl, C IIAlRLIas F.v J AEIINga citizen ofthe United States, residing at St. Louis, State of Missouri, have invented certain new and usefullmprovements vin Driving- Gear, of which the following is a full, clear,

vand exact description, reference being had to tion and elevation of one end of the pulley with shaft in cross-section. Fig. 2 is a middle vertical transverse section on line 2 2.of Fig. 1. Fig. 3 isa transverse vertical section on the broken line 3 3 of'Fig. 2. Fig. 4 is a transverse vertical section on line 4 4 of Fig.

2. Fig. 5 is an edge view ofthe collar carry-,

ing the coupling-lever .with side view of the upper end of the lever. Fig. 6 is a view at right angles toFig. 5, and Fig. 7 is a crosssection in line 7 7 of Fig. 6.y

The object of my invention is to interpose between adrive-shaft and its pulley gear mechanism by which it maybe possible to impart to the pulley a motion of rotation in a direction contrary to that of the shaft, so thatthe necessity -of cross belts shall be dispensed where it isl desirable to impart from said pulley motiorrto a counter-shaft in such reverse direction..

A further object is to .provide means for disengaging the pulley from said shaft, converting the same for the time lbeing into a loose pulley, and bringing the counter-shaft to a standstill.

In detail the invention may be described as follows: Referring to the drawings, S represents adrive-shaft, and P a loose pulley mounted on the same. Secured to one end of the inner rim of the pulley `and rotatable with iti about the shaft is a cover-plate 1, provided on its inner -face withv an annular groove or way 2 for the support and free traverse of the bearing-blocks 3, which carry the adjacent ends of the spindles 4 ofthe series of pinions 5, thel opposite ends of the spindles being mount- `ed inthe female member or rotatable disk 6 of the clutch mechanism by which the pulley is coupled to Vthe shaft, (as presently to be seen.) Disposed about the shaft and confined within the inner rim of the pulley and flush" with the opposite end of said rim is a stationcollars 12 12, clamped tightly' to the shaft on each side of'it. The free end of the lever 10 is provided with a spring-pawl 13, operating in conjunction with a curved rack 14 and being of a constructionwhich is well known and not .herein claimed. The disk 7 is permanently stationary, being heldin position by the arms of the fork 8, which nd a permanent bearing therein. The periphery of the .disk 7 is provided with a series of pockets 15 for the reception of a series of antifrictionw rollers 16, over which the adjacent surface of the inner rim of the pulleytravels while coupled to the shaft, thereby materiallyreducl ing the friction between the parts.

y Keyed to the shaft and adapted to mesh with the several pinions 5 is a gear-wheel 17 the pinions likewise meshing with the toothed or geared section 18 of the inner surface of the inner' rim of the pulley. The latter is retained on the shaft by the collar 12.

The operation of the device isas follows: With the position of the coupling-levershown in Fig. 2 where the female member 6 of the clutch is free to rotate about the shaft, (the fork 8 being wholly disengaged from the groove 9, formed for the reception of the arms of said fork,) then assuming that the shaft S rotates in the direction shown by the arrow, Fig. 1, the gear-wheel 17 rotates the pinions y5, causing the latter to simply travel around over the toothed section 18 of the pulley, (held against rotation by the resistance offered by the tension of the drive-belt leading to the machinery to be driven,) the pulley remaining stationary under the circumstances. In thus rolling around on said toothed section 18 the pinions carry the member 6 about the shaft, and the bearing-blocks 3, in which are mounted the adjacent ends of the spindles il, loosely traverse the groove or way 2, provided for them for this purpose. The moment, however, that the lever 10 is swung to the dotted position, (shown in said Fig. 2,) whereby the fork-arms 8 are forced into frictional engagement with the groove 9 of the female member 6, the latter is instantly locked against rotation, and the shaft while still rotating in the same direction now causes the pinions 5 to drive the pulley in the same direction with them (see arrows in Fig. ll-that is to say,

vin adirection contrary to the rotation of the shaft. rIhe pulley is obliged to rotate in the direction here indicated, since the resistance offered by the fork 8 to the rotation of the disk 6 is greater than that to be overcome by the pulley in driving its belt and the machinery impelled thereby.

It is to be understood that I may depart from the details of construction here shown without in anywise affecting the nature or spirit of my invention. Obviously the invention need not be limited to pulleys, but may be applied to any revoluble bodies.

Having described my invention, what I claim is- 1. Inadriving-gear, arotatable shaft, a pulley mounted loosely thereon, a gear-wheel iixed to the shaft within the pulley, an interior toothed section formed on said pulley, aseries of pinions meshing with the respect ive toothed surfaces, spindles for the pinions, a disk loosely mounted on the shaft and serving as a bearing for the adjacent ends of the spindles, the opposite ends of the spindles being supported by the pulley, and means for holding the disk stationary during the rotation of the shaft, substantially as set forth. 2. Inadriving-gear, arotatable shaft, apulley mounted loosely thereon, a gear-wheel fixed to, the shaft within the pulley, an interior toothed section formed on said pulley, a series of pinions meshing with the respective toothed surfaces, a disk loosely mounted on the shaft and serving as a bearing for the adjacent ends of the spindles of said pinions, a suitable groove or way being formed in the pulley for the support of the opposite ends of the said spindles, and means for holding the disk stationary during the rotation of the shaft, substantially as set forth.

3. In adriving-gear, a rotatable shaft, a pulley mounted loosely thereon, a gear-wheel fixed to the shaft within the pulley, an interior toothed section formed on said pulley, a series of pinions meshing with the respective toothed surfaces, spindles for said pinions, adisk loosely mounted on the shaft and serving as a bearing for the adjacent ends ofthe spindles of the pinions, a groove or way being formed in the pulley for the opposite ends of the spindles, a second disk passed loosely over the shaft, a lever pivoted in proximity to the last disk, a fork carried by the lever and passing loosely through and permanently engaging the second disk, the arms of the fork being adapted to be frietionally forced into engagement with the first-mentioned disk and hold the same stationary during the rotation of the shaft, substantially as set forth.

4. In a driving-gear a rotatable shaft, a pulley having an outer and an inner rim loosely mounted on the shaft, a cover-plate closing one end of the inner rim, a way o1' groove being formed on the inner face of said plate, a disk confined within the inner rim and free to rotate about the shaft, a second disk mounted adjacent thereto within the inner rim, a series of antifriction-rollers mounted on the periphery of the second disk, a toothed section formed along the inner surface of the inner rim, a gear-wheel keyed to the shaft within said toothed section, a series of pinions respectively meshing with said gear-wheel, and the toothed section of the inner rim, bearing-blocks loosely confined within the Way of the cover-plate, the spindles of the pinions having their opposite ends respectively supported in said bearing-blocks and in the firstnamed disk, and means for coupling the two disks together and holding` them stationary during the rotation of the shaft, substantially as set forth.

5. In a driving-gear, a suitable shaft, a pulley mounted loosely thereon, a disk mounted loosely on the shaft within the pulley, a seeond disk loosely embracing the shaft and located adjacent to the lirst disk, a collar loosely embracing the shaft at a point beyond vthe second disk, a lever pivotally suspended from said collar, a fork carried by the lever, the arms of said fork passing through suitable openings in the second disk, a groove being formed on the adjacent face of the first disk for the reception and frictional engagement of the ends of the arms of said fork, and in termediate gearing between the pulley, the shaft and inner disk for imparting rotation to the pulley in a direction reverse to that of the shaft, while the inner disk is held against rotation by the frictional engagement of the fork, substantially as set forth.

6. In a driving-gear, a rotatable shaft, a pulley mounted loosely thereon, a gear-wheel fixed to the shaft Within the pulley, an interior toothed section formed on said pulley, a series of pinions meshing with the respective toothed surfaces, spindles for the pinions, a disk loosely mounted on the shaft and serving as a bearing for the adjacent ends of the spin- IOO TIO

`'761,494 v l 3y dles of said pinions, a ,groove or annular Way In testimony whereof I aiix my signatre in being formed Withfa pi'lleyffo1 the freie tralvpresence ofA two Witnesses. erse of tie'opposte en s o t e spin es, tie

pinions being-free to roll Aalong the geared CHARLES F' JAEHN' section of thepulley for a released position of Witnesses: the disk during'the rotation of the shaft, sub- EMIL STAREK, stantially as set forth. Gr.11. BELFRY. 

